[PSUBS-MAILIST] thruster mod

[Alec Smyth via Personal_Submersibles]

Now that "bi-directional" prop idea is out of the box and original! It
would probably give a prop expert seizures just thinking about all the ways
it would complicate the calculations, but I'm looking forward to hearing
how well it works.

Alec

On Mon, Jul 13, 2015 at 12:47 PM, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi All,
> I just built a propeller modification for my vertical thruster.  I hate
> how the thruster pushes the sub downward so well but does not work as well
> pulling the sub up.  The reason of coarse is, propellers suck in reverse!
> So I built a hub and mounted two props, one in the reverse direction to the
> other.  The props are spaced 4 inches apart. Also when I mounted my new
> ballast tanks, I blocked the flow of water, so, I will mount the new
> thruster in a new location. Oh ya, I used two smaller props so I donèt over
> work the motor.
> Hank
>
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